Simple question...

What type of grease or compound are you supposed to use when installing an HEI control module?

Thanks.

 

Dielectric.

 

No. Dielectric has and may still work, however, it is not the correct product for this.

DG (dielectric grease) is so prevalent as the answer in the auto aftermarket and has caused enough problems that Ford allegedly sent out a TSB on it telling the techs not to use it with the TFI modules, but rather to use the proper thermal heat sink compound.

Yes DG comes packed with some of the ignition modules sold, but that doesn't make it the correct and/or best option, just the cheapest.

DG keeps moisture out of connections when used on both spark plugs and regular low voltage connections. When you use DG in a connection and slide or bolt the connectors together you make a metal to metal contact that carries the current. The DG seals out air and moisture at these contact points which prevents corrosion. It really wasn't meant to transfer heat.


The proper stuff, if you want to grab something from the parts store is a thermal heat sink compound, something like Wells part no. SL203.

hth

 

Ok thanks.